As of September 2023, 10 high-voltage transmission lines were under construction in the United States, for a total of 22.5 billion U.S. dollars invested in the projects. Champlain Hudson, New York, accounted for the highest construction cost. The project had an extension of 330 miles of transmission lines and a voltage of 300 kilovolts.
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Electricity transmission lines under construction in the United States as of September 2023, by cost
(in billion U.S. dollars)
* MISO: Midcontinent Independent System Operator, an Independent System Operator (ISO) and Regional Transmission Organization (RTO) operating in the Midwest, Arkansas, Mississippi, and Louisiana.
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Grid Strategies LLC. (September 13, 2023). Electricity transmission lines under construction in the United States as of September 2023, by cost (in billion U.S. dollars) [Graph]. In Statista. Retrieved June 18, 2025, from https://www.statista.com/statistics/1413981/united-states-electricity-transmission-lines-under-construction-by-cost/
Grid Strategies LLC. "Electricity transmission lines under construction in the United States as of September 2023, by cost (in billion U.S. dollars)." Chart. September 13, 2023. Statista. Accessed June 18, 2025. https://www.statista.com/statistics/1413981/united-states-electricity-transmission-lines-under-construction-by-cost/
Grid Strategies LLC. (2023). Electricity transmission lines under construction in the United States as of September 2023, by cost (in billion U.S. dollars). Statista. Statista Inc.. Accessed: June 18, 2025. https://www.statista.com/statistics/1413981/united-states-electricity-transmission-lines-under-construction-by-cost/
Grid Strategies LLC. "Electricity Transmission Lines under Construction in The United States as of September 2023, by Cost (in Billion U.S. Dollars)." Statista, Statista Inc., 13 Sep 2023, https://www.statista.com/statistics/1413981/united-states-electricity-transmission-lines-under-construction-by-cost/
Grid Strategies LLC, Electricity transmission lines under construction in the United States as of September 2023, by cost (in billion U.S. dollars) Statista, https://www.statista.com/statistics/1413981/united-states-electricity-transmission-lines-under-construction-by-cost/ (last visited June 18, 2025)
Electricity transmission lines under construction in the United States as of September 2023, by cost (in billion U.S. dollars) [Graph], Grid Strategies LLC, September 13, 2023. [Online]. Available: https://www.statista.com/statistics/1413981/united-states-electricity-transmission-lines-under-construction-by-cost/
